{"id":4094,"date":"2018-05-18T23:33:54","date_gmt":"2018-05-18T15:33:54","guid":{"rendered":"http:\/\/www.bookcard.net\/wordpress\/?p=4094"},"modified":"2018-10-14T21:08:56","modified_gmt":"2018-10-14T13:08:56","slug":"opengl_mirror","status":"publish","type":"post","link":"https:\/\/www.bookcard.net\/wordpress\/opengl_mirror\/","title":{"rendered":"OpenGL\u4e4b\u93e1\u50cf"},"content":{"rendered":"
\"\"<\/a>
OpenGL\u93e1\u50cf<\/figcaption><\/figure>\n

\u300e\u93e1\u50cf\u300f\u4e26\u975e\u662f\u771f\u5be6\u4e16\u754c\u4e2d\u7531\u5149\u7c92\u5b50\u6240\u7522\u751f.\u800c\u5f0f\u901a\u904e\u6a21\u64ec\u300e\u93e1\u50cf\u300f\u6280\u8853.\u5de5\u4f5c\u539f\u7406\u5982\u4e0b:<\/p>\n

    \n
  1. \u7981\u7528\u984f\u8272\u548c\u6df1\u5ea6\u7de9\u5b58<\/li>\n
  2. \u555f\u7528\u300e\u6a21\u677f\u7de9\u5b58<\/a>\u300f\u5f8c\u7e6a\u756b\u5730\u677f,\u5c0d\u300e\u6a21\u677f\u7de9\u5b58<\/a>\u300f\u9032\u884c\u5beb\u64cd\u4f5c<\/li>\n
  3. \u7136\u5f8c\u53cd\u8f49\u300e\u5e73\u9762\u8ef8\u300f\u6e32\u67d33D\u591a\u908a\u5f62\u7269\u9ad4\u300e\u93e1\u50cf\u300f.<\/li>\n
  4. \u57283D\u7a7a\u9593\u4e2d\u6e32\u67d3\u5e73\u9762<\/li>\n
  5. \u5728\u5e73\u9762\u7684\u6b63\u9762\u6e32\u67d33D\u591a\u908a\u5f62\u7269\u9ad4<\/li>\n<\/ol>\n

    \u300e\u93e1\u50cf\u300f\u6f14\u793a\u7a0b\u5f0f\u4e0b\u8f09<\/a>:<\/p>\n

    \u300e\u93e1\u50cf\u300f\u793a\u4f8b\u4ee3\u78bc:<\/p>\n

    \/\/ \u7981\u7528\u5c0d\u6240\u6709\u7684\u7136\u8272\u5206\u91cf\u7684\u4fee\u6539<\/p>\n

    glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);<\/p>\n

    \/\/ \u7981\u7528\u6df1\u5ea6\u6e2c\u8a66<\/p>\n

    glEnable(GL_DEPTH_TEST);<\/p>\n

    \/\/ \u6df1\u5ea6\u7de9\u5b58\u8a2d\u70ba\u53ea\u8b80<\/p>\n

    glDepthMask(GL_FALSE);<\/p>\n

    \/\/ \u555f\u7528\u6a21\u677f\u6e2c\u8a66<\/p>\n

    glEnable(GL_STENCIL_TEST);<\/p>\n

    \/\/ \u8a2d\u7f6e\u6a21\u677f\u6bd4\u8f03\u7a0b\u5e8f<\/p>\n

    glStencilFunc(GL_ALWAYS, 1, 0xFFFFFFFF);<\/p>\n

    \/\/ \u8a2d\u7f6e\u6a21\u677fref\u64cd\u4f5c,<\/p>\n

    glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);\/\/<\/p>\n

    \/\/ \u7e6a\u756b\u5730\u677f,\u5c07\u6a21\u677f\u74b0\u5b58\u4e2d\u76f8\u61c9\u7684\u5730\u677f\u50cf\u7d20\u8a2d\u70ba1<\/p>\n

    Draw_Floor();<\/p>\n

    \/\/ \u555f\u7528\u6240\u6709\u984f\u8272\u5206\u91cf\u7684\u4fee\u6539<\/p>\n

    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);<\/p>\n

    \/\/\u00a0 \u555f\u7528\u6df1\u5ea6\u6e2c\u8a66<\/p>\n

    glEnable(GL_DEPTH_TEST);<\/p>\n

    \/\/ \u6df1\u5ea6\u7de9\u5b58\u8a2d\u70ba\u53ef\u8b80\u5beb<\/p>\n

    glDepthMask(GL_TRUE);<\/p>\n

    \/\/ \u8a2d\u7f6e\u6a21\u677f\u6bd4\u8f03\u7a0b\u5e8f,\u53ea\u80fd\u5728\u6a21\u677f\u7de9\u5b58\u4e2d\u503c\u70ba1\u7684\u76f8\u61c9\u53bb\u5340\u57df\u7e6a\u88fd<\/p>\n

    glStencilFunc(GL_EQUAL, 1, 0xFFFFFFFF);<\/p>\n

    \/\/ \u8a2d\u7f6e\u6a21\u677f\u64cd\u4f5c<\/p>\n

    glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);\/\/ \u4fdd\u6301\u7576\u524d\u503c<\/p>\n

    \/\/ \u7e6a\u88fd”\u93e1\u50cf”<\/p>\n

    glPushMatrix();<\/p>\n

    \/\/ \u53cd\u8f49<\/p>\n

    glScalef(1.0f, -1.0f, 1.0f);<\/p>\n

    \/\/\u7e6a\u756b\u6b63\u65b9\u9ad4<\/p>\n

    Draw_Cube();<\/p>\n

    \/\/\u7d50\u675f\u93e1\u50cf\u7e6a\u756b<\/p>\n

    glPopMatrix();<\/p>\n

    \/\/ \u7e6a\u756b\u5730\u677f<\/p>\n

    Draw_Floor();<\/p>\n

    \/\/ \u7981\u7528\u6a21\u677f\u6e2c\u8a66<\/p>\n

    glDisable(GL_STENCIL_TEST);<\/p>\n

    \/\/\u7e6a\u756b\u6b63\u65b9\u9ad4<\/p>\n

    Draw_Cube();<\/p>\n","protected":false},"excerpt":{"rendered":"

    \u300e\u93e1\u50cf\u300f\u4e26\u975e\u662f\u771f\u5be6\u4e16\u754c\u4e2d\u7531\u5149\u7c92\u5b50\u6240\u7522\u751f.\u800c\u5f0f\u901a\u904e\u6a21\u64ec\u300e\u93e1\u50cf\u300f\u6280\u8853.\u5de5\u4f5c\u539f\u7406\u5982\u4e0b: \u7981\u7528\u984f\u8272\u548c\u6df1\u5ea6\u7de9\u5b58 \u555f\u7528\u300e\u6a21 … <\/p>\n

    \u7e7c\u7e8c\u95b1\u8b80 OpenGL\u4e4b\u93e1\u50cf<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62],"tags":[50],"class_list":["post-4094","post","type-post","status-publish","format-standard","hentry","category-opengl","tag-opengl","entry"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/4094","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/comments?post=4094"}],"version-history":[{"count":3,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/4094\/revisions"}],"predecessor-version":[{"id":4103,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/4094\/revisions\/4103"}],"wp:attachment":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/media?parent=4094"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/categories?post=4094"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/tags?post=4094"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}